He all thir Ammunition / And feats of War defeats / With plain Heroic magnitude of mind / And celeſtial vigour arm’d, / Thir Armories and Magazins contemns, / Renders them uſeleſs, while / With winged expedition / Swift as the lightning glance he executes / His errand on the wicked, who ſurpris’d / Loſe thir defence diſtracted and amaz’d.

A chamber in a firearm enabling multiple rounds of ammunition to be fed into the firearm.